Question

WHAT did I do wrong here? :(

What is the 9th term of the geometric sequence where a1 = -6 and a6 = -6,144?


First term: -6
Ratio: -1024
N= 9

Answer 1

Did I mess up on the ratio part?

Answer 2

yes :P

Answer 3

LOL let me revise

Answer 4

can i tell you how can you get it ?

Answer 5

0.000097

Answer 6

-6 divided by (-6144)??

Answer 7

i did this one for you

Answer 8

no....
common ratio = next term/ previous term
a1 and a6 are not consecutive terms

Answer 9

wait huh??? then what is???

Answer 10

http://openstudy.com/study#/updates/5140bf27e4b0f08cbdc91cc0

Answer 11

you'd find common ratio =r by,
an = a1 r^{n-1}
here, and only for this, n=6
a1=-6 always
an=a6 =-6144

Answer 12

so n = 6 temporarily?

Answer 13

yes, only to find the value of 'r'

Answer 14

ok:)

Answer 15

http://www.basic-mathematics.com/geometric-sequence-calculator.html

Answer 16

huh???????????/ ^

Answer 17

don't use that.

Answer 18

Oh?

Answer 19

plug in values in the formula and use other calculator or google.

Answer 20

okay

Answer 21

I don't know how to get this

Answer 22

what u got after plugging in ?

Answer 23

First term: 625
Ratio: -6144
N= 9

Answer 24

I got numbers that were entirely off

Answer 25

in the 8 millions

Answer 26

8 thousands rather*

Answer 27

= -393,216

Answer 28

ratio is not -6144
ratio = r is what you have to find

Answer 29

Really?????

Answer 30

ughhhh oh my god

Answer 31

did you get this step ?